Black Cat Posted October 19, 2018 Report Share Posted October 19, 2018 Hi, I'm about to replace the front cross member and bonnet support bracket on my Triumph Spitfire 1500. I have a 1500 manual which gives the various dimensions which I have attached. The ones I am interested in are dimensions 1 to 3 and 46. My question is, why are there two dimensions in both centimetres and inches from the centre axis to the centre of the components, which one are you supposed to use? Link to comment Share on other sites More sharing options...
yorkshire_spam Posted October 19, 2018 Report Share Posted October 19, 2018 I'd guess that the dimensions are the upper/lower tolerances used when QA checking a chassis, so the "actual" would be between the 2? Link to comment Share on other sites More sharing options...
mark powell Posted October 19, 2018 Report Share Posted October 19, 2018 I'll second that. I rebuilt my 13/60 / Vitesse chassis to within the figures given in the w/s manual and the body lined up with no problems when offered up. Link to comment Share on other sites More sharing options...
KevinR Posted October 19, 2018 Report Share Posted October 19, 2018 I'm just amazed by the precision of the quoted figures - if you can get within 1mm of the value without a factory jig you will be doing very well. 1 Link to comment Share on other sites More sharing options...
Black Cat Posted October 19, 2018 Author Report Share Posted October 19, 2018 I think I will check what the dimensions are before I start taking it apart as well and see how they tie up. Also, looking at the diagram of the chassis I provided, it doesn’t match up to what I have. If you look at the rear part of the chassis you will notice there are two section poking out but on mine they stop just past the rear cross member. The book refers to it as a 1500, were there more than one chassis type for the 1500's? Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 19, 2018 Report Share Posted October 19, 2018 the US export had the extensions under the boot not generally used in the UK they are around there was a topic on this a long way back Pete Link to comment Share on other sites More sharing options...
Black Cat Posted October 19, 2018 Author Report Share Posted October 19, 2018 Thanks for that information Pete Link to comment Share on other sites More sharing options...
NonMember Posted October 19, 2018 Report Share Posted October 19, 2018 2 hours ago, Pete Lewis said: the US export had the extensions under the boot not generally used in the UK Just to expand a little on Pete's explanation... The rear outriggers on the US chassis were part of the much tougher crash survival regime. If you shunt the rear of a UK 1500 Spitfire at 5mph then the bumper will crease the rear valance and boot floor. On a US car, it bounces. On the minus side, 40 years on, the outriggers have trapped water and led to terminal chassis rot, whereas the UK car is still mostly OK. Link to comment Share on other sites More sharing options...
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